Haven't played for ages and I've just got a new gaming rig so I've just installed Dawnguard, Hearthfire, the Hi-Res pack and now Dragonborn so ready to go

I've always preferred stealthy characters to melee but they've never worked for me. I always end up in a melee battle regardless and after level 20 or so I get owned in these battles because I've concentrated so much on stealth skills my one handed skills are no match, so end up reverting to destruction spells which aren't much use (I normally play Dunmer) . I've never really used magic apart from destruction in this game so I want to create a character that can resort to magic to get me out of those situations if possible?
I'm thinking of a build something like this right now, is this feasible do you think?
Race - Undecided. I've always preferred Dunmer as my race but I think the starting boost on destruction is pointless for this.
Major Skills - Sneak, Illusion.
Minor Skills - Archery, Alchemy, Alteration (Or Conjuration?), One handed, Pickpocket.
There may be too many skills here do you think?
Thanks in advance.